/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/Evolution/IndexedConstraintContainer.h
Create Main Scene solver: solves constraints in groups determined by the island manager.
virtual [TUniquePtr](API\Runtime\Core\Templates\TUniquePtr)< [FConstraintContainerSolver](API\Runtime\Chaos\Chaos\Evolution\FConstraintContainerSolver) > CreateGroupSolver ( const int32 Priority )